About Exhibition Gem Faire Costa Mesa - August 2026 will be held from 28th - 30th August 2026 at OC Fair & Event Center - OCFEC in Costa Mesa, California, United States. This is one of the largest exhibition which is related to the gems and jewellery sector. The fair will present a perfect destination for the professionals to discuss on new trends and innovation in the sector and developments of their business in global markets. Discover the latest trends and challenges on the field at this leading conference and enjoy everything the virtual conference has to offer.